I wrote:
> The internet and ISPs can be unreliable . . . I have had files that were > intact for years suddenly become corrupted. That must be an ISP server > problem. > Which means: You should ALWAYS keep a backup copy of any file you upload to the internet. Keep it on your own computer, and in backup disks. The internet copy might suddenly vanish. Also, you should periodically download all the contents of your website.